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2 years ago

3. 2KOH + H2SO4 = K2SO4 + 2H2O what chemical reaction is it.

Chemistry

1 answer:

Serjik [45]2 years ago

5 0

From what is given, double replacement is what it is

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HURRY WHICH ONE IS IT??

aliya0001 [1]

Answer:

Protons are positive, electrons are negative, neutrons have to charge. Most of an Atoms mass comes from its protons and neutrons

Explanation:

I took some notes in my notebook about Atoms.

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2 years ago

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_2. The temperature of a 100. mL sample of gas is increased while the volume it occupies decreases. The

yaroslaw [1]

Answer

the answer is b bro

Explanation:

i did my research and got it right

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2 years ago

PLEASE HURRY I'M TIMED

cricket20 [7]

You should give a picture of the fable!

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1 year ago

The The thermal conductivity of a sheet of rigid, extruded insulation is reported to be k=0.029 W/ m measured temperature differ

vfiekz [6]

Answer:

Heat flux = 13.92 W/m2

Rate of heat transfer throug the 3m x 3m sheet = 125.28 W

The thermal resistance of the 3x3m sheet is 0.0958 K/W

Explanation:

The rate of heat transfer through a 3m x 3m sheet of insulation can be calculated as:

$q=-k*A*\frac{\Delta T}{\Delta X}\\\\q=-0.029\frac{W}{m*K}*(3m*3m)*\frac{12K}{0.025m} =125.28W$

The heat flux can be defined as the amount of heat flow by unit of area.

Using the previous calculation, we can estimate the heat flux:

$heat \, flux=\frac{q}{A}=\frac{125.28 W}{9 m^{2} } =13.92 W/m^{2}$

It can also be calculated as:

$q/A=-k*\frac{\Delta T}{\Delta X}$

The thermal resistance can be expressed as

$\Delta T=R_t*Q\\R_t=\Delta T/Q=\frac{\Delta X}{k*A}$

For the 3m x 3m sheet, the thermal resistance is

$R_t = \frac{\Delta X}{k*A}=\frac{0.025m}{0.029W/mK*9m^{2}}=0.0958 \, K/W$

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3 years ago

Question 8<br>Which one of the following salts does not contain water of crystallisation?

BlackZzzverrR [31]

Baking soda is sodium bicarbonate in anhydrous form without any water of crystallisation and it is widely used as dry fire extinguisher because of its alkali nature.

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2 years ago

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